Armada is a fabulous game with a rich set of lists to choose from due to the objective-based gameplay. The Rebel side is losing options with a lack of squadrons but that's fine.
Note that haven't played Armada competitively since 2017; so, things may have changed since then. However, back then, there was, in my opinion, a big problem with how tournaments were played. Because Armada is such a long game and because players expect swiss rounds (read: a full day of gaming), tournaments couldn't determine top 4 by W-L record alone. So instead, they implemented an 11-point scoring system which heavily favored tabling your opponent. As a consequence, competitive lists tended to be nearly identical.
That may have changed since then. However, if not, understand that you may have to adjust lists you find to suit the models you have. Regardless, the game is brilliant and a ton of fun. I would wager you will have a blast with what you've purchased.